Comparison

AO Surgery Reference vs PsychAtlas

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

AO Surgery Reference

Access a comprehensive online repository of surgical knowledge for fracture management. It provides detailed guidance on diagnosis, treatment, and aftercare for numerous fracture types, supported by extensive illustrations and expert review.

Highlights
  • 353 fracture types covered
  • 172 surgical approaches
  • 1222 surgical procedures
  • Over 30,000 illustrations
  • Feline, canine, and equine fracture care
  • Powerful search function
Features
Read full description

QUICK ONLINE REFERENCE IN CLINICAL LIFE Gain easy access to the award-winning AO Surgery Reference. AO Surgery Reference is an online repository for surgical knowledge. It describes the complete surgical management process from diagnosis to aftercare for all fractures of a given anatomical region, and also assembles relevant material that the AO has published before. It gives access to:   • aid in surgical decision making for 353 fracture types • 172 approaches • 1222 surgical procedures • all richly illustrated with more than 30'000 Illustrations and much more. To ensure the quality of the content, it is authored, edited, and peer reviewed by experienced AO Faculty from all over the world, some of which are also well-known textbook authors/editors. This is a relaunch of the AO Surgery Reference app utilizing the same responsive user interface that was released February 2020. The highlights are: • Consistent navigational logic and user experience on all screen sizes • Inclusion of feline, canine, and equine fracture care • Combination of Preparation – Approach – Reduction and Fixation – Aftercare into one step called treatment. • Introduction of a powerful search function, allowing simplifications of the user interface as it replaces previous shortcuts.

About

PsychAtlas

Master psychiatry with focused lessons, clinical reasoning, and thousands of practice questions. Explore 19 domains covering diagnosis, pharmacology, and treatment. Test your knowledge with customizable quizzes and daily challenges.

Highlights
  • Thousands of practice questions with explanations
  • 19 psychiatry domains for rapid review
  • Clinical reasoning cases
  • Medication reference
  • Daily challenges and customizable quizzes
  • Progress tracking and statistics
Features
Read full description

PsychAtlas is a comprehensive psychiatry learning platform built for medical students and trainees. Master psychiatry through focused lessons, clinical reasoning, and thousands of practice questions covering the major areas of psychiatric medicine. Explore 19 psychiatry domains with structured guides covering diagnosis, differential diagnosis, epidemiology, pharmacology, treatment, and high-yield clinical concepts. Test your knowledge with customizable quizzes, clinical cases, and a daily challenge designed to reinforce what you learn. Features include: • Thousands of psychiatry practice questions with explanations • 19 psychiatry domains organized for rapid review • Clinical reasoning cases based on realistic presentations • Medication reference covering commonly used psychiatric drugs • Daily challenges and customizable quizzes • Progress tracking, accuracy statistics, streaks, and quiz history • Search across topics, medications, and educational content • Bookmarks for important concepts and questions Whether you are studying psychiatry during medical school, preparing for clinical rotations, or reviewing core concepts, PsychAtlas puts a structured psychiatry curriculum in your pocket. Developed by Cameron Sabet, MS, MBA, MA Fourth-Year Medical Student, Georgetown University School of Medicine For educational purposes only. PsychAtlas does not provide medical advice, diagnosis, or treatment and is not a substitute for professional medical judgment.

Screenshots

AO Surgery Reference4 screens
PsychAtlas4 screens

Verdict

The call

The clearest difference is rating: PsychAtlas at 5.0 against AO Surgery Reference's 4.4. AO Surgery Reference's advantage is update cadence (every 6 months vs every 17 months) and ratings volume (14 vs 1). On price, ads, in-app purchases and monetization model there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

PsychAtlas holds the better App Store score, 5.0 against 4.4. That said, the two scores are not equally well evidenced: AO Surgery Reference has 14 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

AO Surgery Reference ships an update every 6 months, PsychAtlas every 17 months. The most recent releases landed on September 24, 2026 and September 9, 2026 respectively.

Scorecard4 real differences · 6 level
AO Surgery Reference versus PsychAtlas: the parameters behind the verdict, then further details
ParameterAO Surgery ReferencePsychAtlas
PriceFreeFree
Rating4.4 (14 ratings)5.0 (1 ratings) — better
Positive reviews85.8% of reviews—
Number of ratings14 — better1
Update frequencyEvery 6 months — betterEvery 17 months
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS13.0 — better26.5
Further details — not scored
Size1 MB4 MB
Age rating17+17+
DeveloperAO FoundationCameron Sabet

Customer experience

AO Surgery Reference

All ratings14 ratings
Positive85.7%
Neutral0.0%
Negative14.3%
Written reviews113 reviews
Positive85.8%
Neutral3.5%
Negative10.6%

PsychAtlas

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

AO Surgery Reference

No in-app purchases

None

PsychAtlas

No in-app purchases

Questions

Is AO Surgery Reference free?
AO Surgery Reference is free to download, with no in-app purchases.
Is PsychAtlas free?
PsychAtlas is free to download, with no in-app purchases.
Which has better reviews, AO Surgery Reference or PsychAtlas?
PsychAtlas is rated higher. AO Surgery Reference averages 4.4 out of 5 from 14 ratings, while PsychAtlas averages 5.0 from 1 ratings.
Do AO Surgery Reference or PsychAtlas have ads?
Neither AO Surgery Reference nor PsychAtlas shows ads.
Which is updated more often, AO Surgery Reference or PsychAtlas?
AO Surgery Reference ships an update every 6 months, and PsychAtlas every 17 months. Most recently, AO Surgery Reference was updated on September 24, 2026 and PsychAtlas on September 9, 2026.

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